C25-6-012

The C25 – 6 – 012 is a 1 inch tweeter with ultra hard ceramic dome in a 82 mm frontplate. Anti-resonant cutout fills in the ceramic dome provide for damping of the 37 kHz dome resonance. An overhung motor design with vented aluminium voice coil former guarantees low energy storage and good heat transfer. The soft fabric surround and ferrofluid with high viscosity center the moving parts with excellent linearity. We recommend an application above 2500 Hz.

Mechanical Data

Overall diameter/square

mm 

82 

Cutout diameter/square

mm 

64 

Frontplate depth

mm 

5 

Overall depth

mm 

57 

Motor assembly depth

mm 

- 

Motor assembly diameter

mm 

- 

Screw fitting

 

DIN 7984, 4mm 

Terminal

mm 

+ : 4.8 x 0.8 / - : 2.8 x 0.8 

Shipping weight /net weight (one piece)

kg 

0.68 / 0.58 

Shipping box size (pair)

mm 

130 / 130 / 190 

Thiele/Small Parameters

Sensitivity (2.83V / 1m)

dB 

90 

Lp

DC-resistance

Ohm 

6.2 

Re

Resonance frequency

Hz 

740 

Fs

Equivalent volume of air

L 

- 

Vas

Mechanical Q

 

0.55 

Qms

Electrical Q

 

1.19 

Qes

Total Q

 

0.38 

Qts

Effective piston area

cm² 

5.94 

Sd

Moving mass

g 

0.23 

Mms

Suspension compliance

mm/N 

0.141 

Cms

Mechanical resistance

kg * s 

1.91 

Rms

Voice Coil Data

Power handling

Watt 

120 

P 

Linear excursion

mm 

+/- 0.6 

Xmax 

Voice coil diameter

mm 

16.4 

 

Voice coil former material

 

Al 

 

Voice coil material

 

Cu 

 

Voice coil inductance

mH 

0.02 

Le 

Force factor

N/A 

2.35 

Bl 

Motor type

 

Overhung 

 

Ferrofluid filling

 

yes 

 

Frequency Response [dB]

Impedance [Ohm]

Harmonic Distortion [%]